package com.system.exam.admin.config;

import com.system.exam.admin.security.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private LoginSuccessHandler loginSuccessHandler;

    @Autowired
    private LoginFailureHandler loginFailureHandler;

    @Autowired
    private JwtLogoutSuccessHandler jwtLogoutSuccessHandler;

    @Autowired
    private MyUserDetailServiceImpl myUserDetailService;

    @Autowired
    private JwtAuthenticationEntryPoint jwtAuthenticationEntryPoint;

    @Autowired
    private CaptchaFilter captchaFilter;

    private static final String[] URL_WHITELIST = {
            "/login",
            "/logout",
            "/captcha",
            "/password",
            "/image/**",
            "/doc.html",
            "/css/**",
            "/js/**",
            "/img/**",
            "/index.html",
            "favicon.ico",
            "/doc.html",
            "/swagger-resources/**",
            "/v2/api-docs/**",
            "/ws/**",
            "/swagger-ui/**",
            "/webjars/**",
            "/druid/**",
            "/actuator/**",
            "/admin/**",
            "/imserver/**",
            "/test/**"
    };

    @Bean
    BCryptPasswordEncoder bCryptPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Bean
    JwtAuthenticationFilter jwtAutherticationFilter() throws Exception {
        return new JwtAuthenticationFilter(authenticationManager());
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
//        super.configure(auth);
        auth.userDetailsService(myUserDetailService);
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
//        super.configure(http);
        //开启跨越以及csrf攻击关闭
        http

                .cors()
                .and()
                .csrf()
                .disable()
                .addFilterBefore(captchaFilter, UsernamePasswordAuthenticationFilter.class)
                //登录登出配置
                .formLogin()
                .successHandler(loginSuccessHandler)
                .failureHandler(loginFailureHandler)
                .and()
                .logout()
                .logoutSuccessHandler(jwtLogoutSuccessHandler)
                //session禁用配置
                .and()
                .sessionManagement()
                .sessionCreationPolicy(SessionCreationPolicy.STATELESS)

                //拦截规则配置
                .and()
                .authorizeRequests()
                .antMatchers(URL_WHITELIST)
                .permitAll()
                .anyRequest().authenticated()
                //异常处理配置
                .and()
                .headers().frameOptions().disable()
                .and()
                .exceptionHandling()
                .authenticationEntryPoint(jwtAuthenticationEntryPoint)
                //自定义过滤器配置
                .and()
                .addFilter(jwtAutherticationFilter());
    }
}
